HBz is a German DJ and production duo from Bad Salzuflen, known for electronic dance music rooted in the hands-up, techno and party-EDM traditions; they emerged in the 2010s and gained wider recognition through energetic club tracks, remixes and collaborations that emphasize driving beats, melodic hooks and festival-oriented production. 2 Engel & Charlie is less widely documented as an artist name; if referring to a collaboration or songwriting/production partnership, it is associated with pop and electronic-leaning material and typically involved in contemporary pop-dance arrangements, vocal-driven tracks and studio production work.